Numerically controlled machine tool and a program transforming method therefor

Abstract

The present invention provides a numerically controlled machine tool and a program transforming method therefor where a NC program is transformed into an optimum program even by a non-expert programmer. Particularly, the present invention provides a method for optimizing a NC program for operating a numerically controlled machine tool, comprising: making the NC program to be loaded into the numerically controlled machine tool; designating a portion of the NC program to be determined whether it is transformable and/or a portion of the NC program to be determined whether a command position is changeable; storing the NC program in a memory; determining whether the designated portion is transformable and/or whether the designated command position is changeable; and transforming the designated portion and/or changing the designated command position, and making an operating program file for the numerically controlled machine tool.

1. A numerically controlled machine tool, comprising:
 a NC program to be loaded into the numerically controlled machine tool, wherein the NC program comprises a plurality of channels; 
 memory means for storing the NC program whose portion to be determined whether a tool selection command position is changeable is designated; 
 determining means for determining whether an operating time by a selected tool is shortened by changing the tool selection command position in waiting conducted in the plurality of channels; 
 command position changing means for changing the tool selection command position of the portion designated in the NC program when the determining means determines that the operating time is shortened by changing the tool selection command position; and 
 a numerical control unit for operating the machine tool according to the NC program changed by the command position changing means. 
 
   
   
     2. The numerically controlled machine tool as claimed in  claim 1 , further comprising:
 an offset data storage portion for storing positional offset data of a workpiece or a tool; and 
 transforming means for transforming the NC program into electronic cam data, the transforming means applying the offset data to the electronic cam data when transforming the NC program into the electronic cam data. 
 
   
   
     3. A method for optimizing a NC program for operating a numerically controlled machine tool, comprising:
 making the NC program to be loaded into the numerically controlled machine tool, wherein the NC program comprises a plurality of channels; 
 designating a portion of the NC program to be determined whether a tool selection command position is changeable; 
 storing the NC program in a predetermined memory in the numerically controlled machine tool; 
 in waiting conducted in the plurality of channels, determining whether an operating time by a selected tool is shortened by changing the tool selection command position; 
 changing the tool selection command position when it is determined that the operating time is shortened by changing the tool selection command position; and 
 making an operating program file for the numerically controlled machine tool.